Constant Line on x-Axis Contingent on Selection?

[MojoGene]

I would like to show constant lines along the x-axis on this line chart for each transition from one day to the next. I can accomplish this simply by entering a hard date value for each line, but I would like the constant line to be in the visual only if the date/time is selected. With hard values, the visual looks like this:

Because the selection does not include the last 2 days, the visual shows empty fields.

I have struggled for a while with the ISINSCOPE function to see if I could create a measure that would show the constant line only when the date is within the selection, but I have hit the wall. Any advice appreciated.

[Anonymous · Accepted solution]

Hi @MojoGene ,

Please have a try.

Constant Line = 
IF(
    ISINSCOPE('Table'[Date]),
    [Value of Constant Line],
    BLANK()
)

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